Traction attachment for wheels



- Api. 10,.1923.

1,451,183- J. W. SHROCK TRACTION ATTACHMENT FOR WHEELS Filed June 25, 1920 John W Shrocl avwewtoz Mom e1 Patented Apr. id, 1923.

Lddhidt JOHN W. SHROCK, OF AKRON, OHIO.

TRACTION ATTACHMENT FOB WHEELS.

Application filed June 25, 1920. Serial No. 391,670.

To all whom it may concern:

Be it known that 1, JOHN W. SHRocK, a citizen of the United States, residin at Akron, in the county of Summit and d tate of Ohio. have invented new and useful Improvements in Traction Attachments for Wheels, of which the following is a specification.

This invention relates to a new and im proved device which is adapted to be attached to a drive wheel of a self-propelled vehicle to increase the traction thereof.

The invention has special reference to a device part cularly adapted for use in extricating trucks and other vehicles from mud, deep sand and other places in which the drive wheels will freely spin and no traction can be secured.

The main object of the invention is to provide a strong, durable, compact device of simple, economical construction, which may be easily and quickly attached to said wheels and which when so attached will increase the traction thereof so that the vehicle may be driven'through mud, soft earth or sand of such depth that it would be ordinarily impossible to drive a self-propelled vehicle therethrough.

The above and additional objects are accomplished by the novel construction herein described and illustrated in the accompanying drawings, it being understood that the invention is capable of various adaptations andthat changes and modifications may be a resorted to which come within the scope of the claim hereunto appended.

In the drawings in which similar numerals of reference are employed to designate corresponding parts throughout the several views, and in which Figure 1 is a perspective view of a device constructed in accordance with this invention.

Figur 2 is an end view of said device showing the same as applied to a wheel, a portion of the wheel being shown'in side elevation.

Figure 3 is a sectional view taken as indicated by the line 38 of Figure 2.

Proceeding now with a detailed description, a device constructed in accordance with this invention comprises a box like structure provided with a bottom or base plate 5, end walls 6 and 7 and side walls 8 and 9. The base plate 5 is curved laterally to provide an arcuate surface which conforms with the circumferential outline of the tire 10 on which it is to be used. The base of each side wall 8 and 9'is positioned inwardly from and in parallel, spaced relation to the lateral sides of the plate 5 and each of said side walls extends upwardly from the said base plate. The portion of th base plate 5 projecting beyond the base of the side wall 8 forms the ledge 11 and likewise the portion of the said base plate projecting beyond the base of the wall 9 forms the ledge 12. The end Walls ext endupwardly and outwardly from the ends of the base plate 5 and. are laterally arched to provide an outwardly projecting bulge. It will be seen that the end walls 6 and 7 diverge outwardly and areconsiderably lower than the side walls 8 and 9 and are integral with the side walls and the bottom 5. A centrally positioned opening 14 is cut or otherwise formed at each end of-the device,

the same being positioned on the line of juncture between the end walls and the base plate 5 so as to extend into both the said base plate and the end wall. A centrally positioned strengthening web or partition 13 extends laterall across the device from the side 8 to the side '9, the same being integral with said side walls and integral with the bottom 5. Each end of said partition 13 is of approximatelv the same height as the side wall 8 and 9, the said partition being curved downwardly from eachside wall to provide a relatively low central portion as clearly shown in Figure 1. A strengthening bracket 15 extends upwardly from the ledge 11 adjacent each end of the device. The said strengthening brackets being integral with the base plateand the side wall 8. Similar brackets 15 extend upwardly from the ledge 12 and are integral with the.

side 9.

In use, the device is placed laterally across a tire as shown in Figures 2 and 3, a chain 16 is passed through one of theopenings let over the central portion of the partition l3 and through the other opening 14, the ends of the chain being secured together, underneath the felly 17 of the wheel. The device is particularly adapted to be placed in the tool box of a motor truck or similar vehicle so that should the vehicle-become stalled in deep sand or mud, the device may be easily and quickly attached as above set forth, whereupon the rotation of the wheel will cause the side walls 8 and 9 to engage the sand or mud and permit the vehicle to be driven under its own power therefrom.

While I have shown and described a device which is adapted to be applied to an '55 ordinary truck tire, it is to be understood that the shape of the base plate may be varied to adapt it to all styles of tires.

Having thus described my invention What I claim as new and desire to secure by Letteis-Patent is In a device of the class described, an integral box-like structure, comprising a bottom plate, arched laterally to conform to the circumferential outline of a Wheel; parallel side Walls. outwardly bulged relatively 10W end walls; an opening in each end Wall a centr ll {)Ofiltl lied, laterally extending, stren iin i partition; said bottom plate cxtener s; outwardly beyond said side Walls, each of said openzngs being positioned at the base of an end Wall so as to extend into both the end wali and base plate, substanly as herein set forth. ln testimony whereof I my hand.

JOHN

have hereunto set W. SHRGCK. 

